Average annual temperature is 12.7 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -10.3 °C
Number of sunny days: 153 days
Number of rainy days: 205 days
Number of snow days: 7 days
Look at detailed online map of Key
* Weather data for Key United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.4 | 21.6 | 23.1 | 28.2 | 30.4 | 32.8 | 33.1 | 32.6 | 34.3 | 28.7 | 19.5 | 16.8 |
| Average daytime temperature (°C) | 8.3 | 11.6 | 11.6 | 19.0 | 22.5 | 26.4 | 29.6 | 27.7 | 25.4 | 18.9 | 12.0 | 9.5 |
| Average temperature (°C) | 3.8 | 5.0 | 5.4 | 12.1 | 15.7 | 20.1 | 23.6 | 22.0 | 19.4 | 13.7 | 6.4 | 5.1 |
| Average night temperature (°C) | 0.7 | 0.3 | 0.8 | 6.3 | 9.9 | 14.5 | 19.1 | 17.2 | 14.6 | 9.7 | 2.3 | 2.0 |
| Absolute minimum temperature (°C) | -5.9 | -10.3 | -7.6 | -1.1 | 2.2 | 9.4 | 14.9 | 12.2 | 9.2 | 1.6 | -6.6 | -5.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.2 | 7.0 | 6.9 | 8.6 | 10.4 | 11.0 | 11.3 | 10.5 | 8.9 | 7.4 | 6.9 | 5.0 |
| Precipitation (mm) | 120 | 58 | 111 | 68 | 98 | 103 | 108 | 127 | 51 | 97 | 44 | 79 |
| Sunny days | 8 | 15 | 12 | 14 | 18 | 10 | 6 | 10 | 12 | 15 | 22 | 11 |
| Rainy days | 20 | 12 | 18 | 16 | 13 | 20 | 25 | 21 | 18 | 16 | 8 | 18 |
| Snow days | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Key during the most sunny months:
The largest precipitation sum in Key is at